AudioSystem.hpp

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#pragma once
 
#include <unordered_map>
#include <memory>
#include <string>
 
#include <SDL3/SDL.h>
#include "components/ECS/ECS.hpp"
 
#include "components/VirtualFileSystem.hpp"
#include "components/GameComponents/BasicComponents.hpp"
#include "components/GameComponents/AudioSourceComponent.hpp"
 
namespace vex {

class AudioSystem {
public:
    AudioSystem(vex::Registry& reg);

    void Init(vex::VirtualFileSystem* vfs);

    void Update(vex::Entity cameraEntity);

    void Shutdown();

    void PlaySound2D(const std::string& filePath, float volume = 1.0f, float pitch = 1.0f, bool loop = false);
 
private:
    SDL_AudioDeviceID deviceID;
    VirtualFileSystem* vfs = nullptr;
    vex::Registry& registry;

    std::unordered_map<std::string, std::unique_ptr<AudioClip>> clipCache;

    std::unordered_map<vex::Entity, SDL_AudioStream*> streamMap;

    void OnAudioComponentDestroyed(vex::Registry& registry, vex::Entity entity);
 
    struct StandaloneAudio {
        SDL_AudioStream* stream;
        AudioClip* clip;
        bool loop;
    };
    std::vector<StandaloneAudio> standaloneStreams;
};
 
}